Integrated Display Pixels for Portable Blood Pressure Sensing
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Solution Overview
Problem
Conventional electronic blood pressure measurement devices are cumbersome due to the need for separate light sources, sensors, and displays, making them inconvenient for portability.
Innovation Solution
A display device with integrated light sources and sensors, featuring boost display pixels with higher luminance and adjacent light-receiving units, allowing for blood pressure measurement without additional components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate light source, sensor, and display components are used for blood pressure measurement, then measurement function is achieved, but device portability and convenience deteriorate
Solution Approach 1:
The patent merges the light source function and light receiving function into a single display device. The display device includes both display pixels that emit light and photoelectric conversion pixels that receive light, eliminating the need for separate blood pressure measurement devices and enabling portable use.
Solution Approach 2:
The display device is designed to perform multiple functions: it serves as both a display device and a blood pressure measurement device. By integrating light emission for display and light reception for sensing within the same device structure, it achieves multi-functionality without requiring additional separate components.
2Illumination intensity
If boost display pixels with higher luminance are used, then light emission intensity for measurement is improved, but power consumption increases
Solution Approach 1:
The patent applies local quality by creating different types of pixels with different functions within the same display: normal display pixels for standard display and boost display pixels with higher luminance for blood pressure measurement. This localized enhancement of luminance only where needed reduces overall power consumption compared to increasing luminance across the entire display.
Solution Approach 2:
The control unit controls the boost display pixels to emit light with higher luminance only during blood pressure measurement periods, rather than continuously. This periodic activation of high-luminance mode reduces power consumption while still achieving the required light intensity for accurate measurement when needed.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables convenient blood pressure measurement through a portable display device by integrating light and sensor functions, enhancing portability and precision.
Implementation Method 1
Some of the pixels include normal display light-emitting layers as the active layers. Some of the pixels include boost display light-emitting layers, which have a higher emission luminance than the normal display light-emitting layers, as the active layers.
Implementation Method 2
Some of the pixels include photoelectric conversion layers as the active layers
Data Source
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AI summary
Provided is a display device including a plurality of normal display pixel (NPX), one boost display pixel (BPX) having a higher maximum luminance than the plurality of normal display pixels, and one light-receiving pixel (APX) disposed adjacent to the boost display pixel. Each of the normal display pixel, the boost display pixel, and the light-receiving pixel includes a first electrode (ANO), a second electrode (CAT), and an active layer, which is interposed between the first and second electrodes. The first electrodes of the normal display pixel, the boost display pixel, and the light-receiving pixel are disposed in the same layer. The second electrodes of the normal display pixel, the boost display pixel, and the light-receiving pixel are integrally connected to one another.